Bicycle-gear.



PATENTED OCT. 6, 1903h J. H. TRISMEN.

BICYCLE GEAR.

APPLIUATION HLB'D MAB. 3, 1903.

N0 MODEL y wir/Essesrai-.enten october e, i903.

PATENT Ormes.Y

JOHN HENRY TRISMEN, OF NEW YORK, N. Y.

BICYCLE-GEAR.

SPECIFICATION forming part of Letters Patent No. 740,950, dated October 6, IOS.

Application liled March 3, 1903. Serial No. 145,922. (No model.)

b all whom .it may eonoerrtz" 4Be it known that I, JOHN HENRY TalsMnN, a citizen of the United States, and a resident ofthe city of New York, (Port Richmond, borough of Richmcnd,) in the county of Richmond and State ot' New York, have invented a new and Improved Bicycle-Gear, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved bicycle-gear more especially designed for transmitting the motion of the sprocket-chain to the rear or driving wheel of the bicycle in an economical manner, at the same time insuringa high speed to the bicycle and utilizing the power exerted by" the rider or motor to the fullest advantage.

The invention consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims. l

A practical embodiment of the invention is represented in the accompanying drawings,

forming a part ofV this specification, in which' similar characters of reference indicate corresponding 'parts in all the views.

Figure 1 is a side elevation of the improvement as applied. Fig. 2 is an enlarged sectional plan view of the improvement,and Fig. 8 is a sectional rear side elevation of the same on the line 3 3 of Fig. 2.

The hub Al of the rear or driving wheel A of a bicycle is journaled on suitable ball-bearings B, supported from a rear axle C, held in the usual manner on the frame D of the bicycle. On one end of the hub A is formed or secured a sprocket-pinion Ein mesh with anthe sprocket-Wheel G, which by the sprocketchain F rotates the sprocket-pinion E, and consequently the rear or driving wheel A.

As indicated in Fig. 3,theendless sprocketchain wheel F has it blocks secured by bolts or other means L to the rim G', it being understood that the said sprocket-chain wheel forms 'an internal wheel for rotating the pinion E to drive the rear or driving wheel A, as above described. Y l

By the arrangement described the traveling motion of the sprocket-chain J is readily converted into rotary motion, and at the same time a high speed is given to the rear or driving wheel A, and the power exerted by the rider on the pedals of the crank-shaft K is transmitted to the fullest advantage.

It is understood that I do not limit myself to the pedal mechanism shown, as the device may be equally well used on motor-bicycles 'and other machines.

Having thus described my invention, I

claim as new and desire to secure by Letters l' face of the rim of the sprocket-wheel, and

with which the said pinion engages, as set forth.

Y 2. Adriving-gear,eomprising agear-Wheel, an endless sprocket-chain xedly secured to the said gear-wheel, and a sprocket-pinion on the part to be driven and meshing with said endless sprocket-chain, as set forth.

3. A driving-gear for bicycles, comprising a wheel to bedriven, a sprocket-pinion on the hub of the said wheel, an endless sprocketchain in mesh with the said sprocket-pinion, and a driven sprocket-wheel to the inner face of which the said endless sprocket-chain is iixedly secured, as set forth.

4. A driving-gear for bicycles, comprising a sprocket-chain, a sprocket-wheel engaged by the said sprocket-chain and formed with In testimony whereof I have signed my an annular rim, an endless sprocket-chain name to this specioation in thepresence of having its blocks secured to the said rinn at two subscribing Witnesses.

the inner face thereof, a sprocket-pinion in JOHN HENRY TRISMEN. mesh with the said endless sprocket-chain, Witnesses:

and a driven Wheel Carrying on its hub the HENRY S. SEAWOOD,v

said sprocket-pinion, as set forth. l FREDERICK TRISMEN.` 

